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For over a century, it has been agreed that the long-necked sauropods are cousins of the carnivorous theropods based on features of the vertebrae and hands. One study suggests that this is incorrect. The theropods seem to be related to the beaked herbivorous ornithischians instead.

For many decades, it was believed that the group of dinosaurs known as theropods (“beast-footed”) were all carnivores that filled the role of apex predators in prehistoric ecosystems. Now we know that things weren’t that simple. While herbivorous dinosaurs haven't been known to evolve carnivory, paleontologists have found multiple meat-eaters that gave up on their habit.

Exceptionally well-preserved fossils of red algae living in a shallow equatorial sea have been discovered in central India. These fossils represent the oldest known multicellular organisms and push back the origin of complex life by hundreds of millions of years.